gl | OpenGL headless on linux | Graphics library

by eduble Python Version: Current License: BSD-3-Clause

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | gl Summary

gl is a Python library typically used in User Interface, Graphics applications. gl has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. However gl build file is not available. You can download it from GitHub.

This repository contains a sample python program which runs GPU computations (OpenGL) in headless mode (no display). The program initializes an OpenGL context using EGL (and, optionally, GBM). It will connect to kernel DRM interface file at /dev/dri/. Then, to test if it works, it calls very basic OpenGL drawing functions to draw a blue rectangle, and writes a ppm image file.

Support

Quality

Security

License

Reuse

Support

gl has a low active ecosystem.

It has 18 star(s) with 4 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

There are 2 open issues and 1 have been closed. On average issues are closed in 8 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of gl is current.

Quality

gl has no bugs reported.

Security

gl has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

gl is licensed under the BSD-3-Clause License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

gl releases are not available. You will need to build from source code and install.

gl has no build file. You will be need to create the build yourself to build the component from source.

Installation instructions are not available. Examples and code snippets are available.

Top functions reviewed by kandi - BETA

kandi has reviewed gl and discovered the below as its top functions. This is intended to give you an instant insight into gl implemented functionality, and help decide if they suit your requirements.

Initialize a device .
Initialize the OpenGL surface .
Write PPM to file .
Define an external function .
Probes on EGL devices .
Main entry point for the OpenGL .
Draws the color buffer .
Define an OpenGL extension .
Call the function
Convert dict to ctypes array

Get all kandi verified functions for this library.

gl Key Features

No Key Features are available at this moment for gl.

gl Examples and Code Snippets

No Code Snippets are available at this moment for gl.

Community Discussions

Trending Discussions on gl

How to deal with spaces in a HTML/JavaScript class name

Mapbox Terrain: Reference DEM values in a Style expression

getUniformLocation return null

Kivy AttributeError: 'super' object has no attribute '__getattr__' (Tried all previous solutions)

fltk: failed to resolve GlutWindow

PyOpenGL Glut Window

threebox "projectToWorld" returns values exceeding canvas, how do I fix this? (with sample code)

How to get the text input of a label in kivyMD

OpenGL wont render a square properly

How to remove a country from intl-tel-input

QUESTION

How to deal with spaces in a HTML/JavaScript class name

Asked 2021-Jun-15 at 20:06

I am having problems getting data from a element using Selenium with the line:

...

ANSWER

Answered 2021-Jun-15 at 20:06

When an element has spaces in the class attribute, that means it has multiple classes, so you'll need to handle that another way.

One option is with CSS selectors.

https://selenium-python.readthedocs.io/locating-elements.html#locating-elements

https://selenium-python.readthedocs.io/api.html#locate-elements-by

Source https://stackoverflow.com/questions/67992425

QUESTION

Mapbox Terrain: Reference DEM values in a Style expression

Asked 2021-Jun-14 at 10:27

Is it possible to retrieve DEM elevation values for use in a Mapbox Style expression?

Case in point - I'm using a custom DEM for terrain in Mapbox GL-JS. I would like to set the exaggeration based on the elevation value (lower terrain, higher exaggeration) via an interpolate expression.

...

ANSWER

Answered 2021-Jun-14 at 10:27

I don't think there is any mechanism to retrieve the height of terrain within an expression, so no.

In any case, according to the documentation the terrain type only has basic functionality (ie, not data-driven expressions), so you can't do what you're trying to do for that reason, too.

Source https://stackoverflow.com/questions/67967944

QUESTION

getUniformLocation return null

Asked 2021-Jun-13 at 18:45

I have a uniform in my fragment shader and when I try to get the value of the location of the uniform, it returns null.

I checked the spelling and I don't find any spelling error and this uniform is also used in the shader code.

My error is:

error in getUniformLocation([object WebGLProgram], materialAmbient): uniform 'materialAmbient' does not exist in WebGLProgram("unnamed")

This is my code in WebGL to get a uniform location.

...

ANSWER

Answered 2021-Jun-13 at 06:22

The uniforms materialAmbient, ambientLight and specularLight are not "used" in the shader program. They are not required to calculate the output outColor (Actually materialAmbient are ambientLight use to calculate effectiveAmbient. effectiveAmbient, however is not used).
The compiler and linker optimize the program and removes unnecessary calculations and unnecessary variables. Therefore this variables become no active program resource and you cannot get the resource index (uniform location) for this variables.

Source https://stackoverflow.com/questions/67955038

QUESTION

Kivy AttributeError: 'super' object has no attribute '__getattr__' (Tried all previous solutions)

Asked 2021-Jun-13 at 13:56

This Has To One OF The Most Annoying Errors In Python That Have So Many Solutions Depending On The Question

My Files

Main.py

...

ANSWER

Answered 2021-Jun-13 at 13:56

The cryptic error message is of little help, but the stack trace shows that the error occurs in the line:

Source https://stackoverflow.com/questions/67955588

QUESTION

fltk: failed to resolve GlutWindow

Asked 2021-Jun-13 at 12:27

I'm trying to follow example of fltk application which uses openGl, but the build is not functioning:

...

ANSWER

Answered 2021-Jun-11 at 16:12

Check your imports which are missing from that snippet. Also if you’re not enabling the enable-glwindow feature, you should, try changing your Cargo.toml to include the missing feature:

Source https://stackoverflow.com/questions/67939982

QUESTION

PyOpenGL Glut Window

Asked 2021-Jun-13 at 12:11

So I recently started to use PyOpenGL's GLUT module and cannot find any simple tutorials on it (links to any would be appreciated) and I just want to create a glut window using glutCreateWindow('window'), but as soon as the window pops up it disappears. I tried using glutMainLoop() in my main function but it just gives an error.

...

ANSWER

Answered 2021-Jun-13 at 12:11

You must set glutDisplayFunc callback. The glut main loop invokes the display call back.

Minimal example:

Source https://stackoverflow.com/questions/67256146

QUESTION

threebox "projectToWorld" returns values exceeding canvas, how do I fix this? (with sample code)

Asked 2021-Jun-12 at 22:39

I recently found out there is a very handy method in three-box for placing three.js objects on the map which is "projectToworld".

While trying to place my three.js objects using the method, I realized that the Vector3 the method returns are really huge and not on the map.

According to the documentation of threebox, it says

projectToWorld

tb.projectToWorld(lnglat) : THREE.Vector3

Calculate the corresponding THREE.Vector3 for a given lnglat. It's inverse method is tb.unprojectFromWorld.

So I decided to use this method to locate my animated object in three js canvas. But what the methods returns are really huge.

So as I expected, these values don't place the three objects on the map and all the objects disappeared because they presumably are placed at very distant locations.

How do I fix this issue?

I made a minimal code to demonstrate this issue as below.

instantiating map

...

ANSWER

Answered 2021-Jun-12 at 22:39

It's strange that no one could answer this question. So I finally figured out how to make it by myself.

The solution is in the following link.

The primary reason was that mapbox plots things not based on its vector configuration. It renders things through its matrix as follows.

var m = new THREE.Matrix4().fromArray(matrix); var l = new THREE.Matrix4().makeTranslation(modelTransform.translateX, modelTransform.translateY, modelTransform.translateZ) .scale(new THREE.Vector3(modelTransform.scale, -modelTransform.scale, modelTransform.scale))

Source https://stackoverflow.com/questions/67864751

QUESTION

How to get the text input of a label in kivyMD

Asked 2021-Jun-11 at 19:37

I am using KivyMD and I am trying to get the text from the text input in kivyMD. I keep getting the following error:

...

ANSWER

Answered 2021-Jun-09 at 22:57

As the error message states:

Source https://stackoverflow.com/questions/67878097

QUESTION

OpenGL wont render a square properly

Asked 2021-Jun-11 at 13:24

I am trying to render a colored square in OpenGL using glBegin(GL_QUADS) but for some reason it renders the square with an extra vertex in the middle. Screenshot. Am I doing something wrong or do I have to use a different method for 2d rendering?

...

ANSWER

Answered 2021-Jun-11 at 09:49

The order of the indices is wrong:

Source https://stackoverflow.com/questions/67934703

QUESTION

How to remove a country from intl-tel-input

Asked 2021-Jun-11 at 12:14

(new in javascript)

I am asked to remove a country (China) from the dropdown menu of the plugin intl-tel-input

the code below displays the dropdown menu and it looks that it calls the utils.js file to retain the countries

...

ANSWER

Answered 2021-Jun-11 at 12:14

If you take a look at the intl-tel-input documentation regarding Initialisation Options. There is an option called excludeCountries.

We can modify your initialisation code to include this option to exclude China:

Source https://stackoverflow.com/questions/67935923

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install gl

You can download it from GitHub.
You can use gl like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.